In regards to your previous question, getting 415V(RMS) from 300VDC, thats not possible. What i meant was, with a 300V Battery attain 213V line to line or 370V V(RMS) from the resulting output drive a 415V motor, which is mostly rated 380-440V.
How did I get to these values: Using the matlab simulations. I posted the file so that everyone can have a look at it. I also have a few more, if needed, with a bit different modulation.
On that simulation I've used a 10V DC supply and the resulting peak to peak was 20V. What this differs is that on a regular inverter, the PWM is center aligned and Vpeak = Vbus, hence sqroot(2) applies to find the maximum phase to phase RMS value, ignoring over modulation.
Another alternative would be a boost converter with a capacitor, two IGBT's and two diodes (or 4 IGBT's to be able to regenerate). I also did that (In real life one would need a pre-charge circuit as well)
The values given are:
Input Voltage = 400V
Duty cycle = 45%
Frequency = 10KHz
Capacitor size = 1000uF
Load = 10Ohm (About 78Amps current)
